Anyone Know of Duggan Mountain Near Cisco?

Anyone Know of Duggan Mountain Near Cisco?

Supposedly, two individuals in our family were buried at Duggan Mountain near Cisco.

WATSON, Catherine died 02 Jul 1899. Her mother, Frances "Fannie/Fanny" WATSON died over near Blue Ridge (Fannin Co.) between 1870-1880, but is supposoed to have been buried near her daughter at Duggan Mountain.

Does anyone have any idea where these burials may have occurred? I can find no reference to a Duggan Mountain, much less a cemetery, near Cisco.